Joy: this is the kind of thing they do very well at COS. If you're willing to pay a bit more, you can also find great examples by smaller designers. But at the top end, the impact comes from the quality of the materials and craftsmanship, which never comes cheap.
I have to say though that I'm not overly impressed with the examples shown here. These very statement-y silhouettes look quite challenging to wear, the kind of exaggerated pieces that don't mix well and easily overwhelm the wearer.
I don't think there's any substitute for knowing what you like, what suits you and how to put it together. When it comes to business wardrobes, I think there are ladies here on this forum who do a better job.